Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package device |
| 18 | |
| 19 | import ( |
| 20 | "context" |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 21 | "fmt" |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 22 | "github.com/opencord/voltha-go/rw_core/route" |
| 23 | "github.com/opencord/voltha-lib-go/v3/pkg/log" |
| 24 | ofp "github.com/opencord/voltha-protos/v3/go/openflow_13" |
| 25 | "github.com/opencord/voltha-protos/v3/go/voltha" |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 26 | ) |
| 27 | |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 28 | // GetRoute returns a route |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 29 | func (agent *LogicalAgent) GetRoute(ctx context.Context, ingressPortNo uint32, egressPortNo uint32) ([]route.Hop, error) { |
| 30 | logger.Debugw("getting-route", log.Fields{"ingress-port": ingressPortNo, "egress-port": egressPortNo}) |
| 31 | routes := make([]route.Hop, 0) |
| 32 | |
| 33 | // Note: A port value of 0 is equivalent to a nil port |
| 34 | |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 35 | // Controller-bound flow |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 36 | if egressPortNo != 0 && ((egressPortNo & 0x7fffffff) == uint32(ofp.OfpPortNo_OFPP_CONTROLLER)) { |
| 37 | logger.Debugw("controller-flow", log.Fields{"ingressPortNo": ingressPortNo, "egressPortNo": egressPortNo, "logicalPortsNo": agent.logicalPortsNo}) |
| 38 | if agent.isNNIPort(ingressPortNo) { |
| 39 | //This is a trap on the NNI Port |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 40 | if agent.deviceRoutes.IsRoutesEmpty() { |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 41 | // If there are no routes set (usually when the logical device has only NNI port(s), then just return an |
| 42 | // route with same IngressHop and EgressHop |
| 43 | hop := route.Hop{DeviceID: agent.rootDeviceID, Ingress: ingressPortNo, Egress: ingressPortNo} |
| 44 | routes = append(routes, hop) |
| 45 | routes = append(routes, hop) |
| 46 | return routes, nil |
| 47 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 48 | |
| 49 | // Return a 'half' route to make the flow decomposer logic happy |
| 50 | routes, err := agent.deviceRoutes.GetHalfRoute(true, 0, 0) |
| 51 | if err != nil { |
| 52 | return nil, fmt.Errorf("no upstream route from:%d to:%d :%w", ingressPortNo, egressPortNo, route.ErrNoRoute) |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 53 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 54 | return routes, nil |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 55 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 56 | // Treat it as if the output port is the first NNI of the OLT |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 57 | var err error |
| 58 | if egressPortNo, err = agent.getFirstNNIPort(); err != nil { |
| 59 | logger.Warnw("no-nni-port", log.Fields{"error": err}) |
| 60 | return nil, err |
| 61 | } |
| 62 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 63 | |
| 64 | //If ingress port is not specified (nil), it may be a wildcarded route if egress port is OFPP_CONTROLLER or a nni |
| 65 | // logical port, in which case we need to create a half-route where only the egress hop is filled, the first hop is nil |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 66 | if ingressPortNo == 0 && agent.isNNIPort(egressPortNo) { |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 67 | routes, err := agent.deviceRoutes.GetHalfRoute(true, ingressPortNo, egressPortNo) |
| 68 | if err != nil { |
| 69 | return nil, fmt.Errorf("no upstream route from:%d to:%d :%w", ingressPortNo, egressPortNo, route.ErrNoRoute) |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 70 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 71 | return routes, nil |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 72 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 73 | |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 74 | //If egress port is not specified (nil), we can also can return a "half" route |
| 75 | if egressPortNo == 0 { |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 76 | routes, err := agent.deviceRoutes.GetHalfRoute(false, ingressPortNo, egressPortNo) |
| 77 | if err != nil { |
| 78 | return nil, fmt.Errorf("no downstream route from:%d to:%d :%w", ingressPortNo, egressPortNo, route.ErrNoRoute) |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 79 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 80 | return routes, nil |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 81 | } |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 82 | |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 83 | // Return the pre-calculated route |
| 84 | return agent.deviceRoutes.GetRoute(ctx, ingressPortNo, egressPortNo) |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | // GetDeviceRoutes returns device graph |
| 88 | func (agent *LogicalAgent) GetDeviceRoutes() *route.DeviceRoutes { |
| 89 | return agent.deviceRoutes |
| 90 | } |
| 91 | |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 92 | //rebuildRoutes rebuilds the device routes |
| 93 | func (agent *LogicalAgent) buildRoutes(ctx context.Context) error { |
| 94 | logger.Debugf("building-routes", log.Fields{"logical-device-id": agent.logicalDeviceID}) |
| 95 | if err := agent.requestQueue.WaitForGreenLight(ctx); err != nil { |
| 96 | return err |
| 97 | } |
| 98 | defer agent.requestQueue.RequestComplete() |
| 99 | |
| 100 | if agent.deviceRoutes == nil { |
| 101 | agent.deviceRoutes = route.NewDeviceRoutes(agent.logicalDeviceID, agent.deviceMgr.getDevice) |
| 102 | } |
| 103 | // Get all the logical ports on that logical device |
| 104 | lDevice := agent.getLogicalDeviceWithoutLock() |
| 105 | |
| 106 | if err := agent.deviceRoutes.ComputeRoutes(ctx, lDevice.Ports); err != nil { |
| 107 | return err |
| 108 | } |
| 109 | if err := agent.deviceRoutes.Print(); err != nil { |
| 110 | return err |
| 111 | } |
| 112 | return nil |
| 113 | } |
| 114 | |
| 115 | //updateRoutes updates the device routes |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 116 | func (agent *LogicalAgent) updateRoutes(ctx context.Context, device *voltha.Device, lp *voltha.LogicalPort, lps []*voltha.LogicalPort) error { |
| 117 | logger.Debugw("updateRoutes", log.Fields{"logical-device-id": agent.logicalDeviceID, "device-id": device.Id, "port:": lp}) |
| 118 | |
| 119 | if err := agent.deviceRoutes.AddPort(ctx, lp, device, lps); err != nil { |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 120 | return err |
| 121 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 122 | if err := agent.deviceRoutes.Print(); err != nil { |
| 123 | return err |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 124 | } |
khenaidoo | 0db4c81 | 2020-05-27 15:27:30 -0400 | [diff] [blame] | 125 | return nil |
| 126 | } |
| 127 | |
| 128 | //updateAllRoutes updates the device routes using all the logical ports on that device |
| 129 | func (agent *LogicalAgent) updateAllRoutes(ctx context.Context, device *voltha.Device) error { |
| 130 | logger.Debugw("updateAllRoutes", log.Fields{"logical-device-id": agent.logicalDeviceID, "device-id": device.Id, "ports-count": len(device.Ports)}) |
| 131 | |
| 132 | ld, err := agent.GetLogicalDevice(ctx) |
| 133 | if err != nil { |
| 134 | return err |
| 135 | } |
| 136 | |
| 137 | if err := agent.deviceRoutes.AddAllPorts(ctx, device, ld.Ports); err != nil { |
Kent Hagerman | 3136fbd | 2020-05-14 10:30:45 -0400 | [diff] [blame] | 138 | return err |
| 139 | } |
| 140 | if err := agent.deviceRoutes.Print(); err != nil { |
| 141 | return err |
| 142 | } |
| 143 | return nil |
| 144 | } |